Switching and relay system



Sept. 6, 1932, I v A. M. TROGNER. 6, 9

SWITCHING AND RELAY SYSTEI Filed Dec. 13, I928 IN VEN TOR.

ATTORNEY l 1 provide a switchingv and relay system where-- Patented Sept. 6 1932 UNITED STATES PA ENT o'i-"rlca earner. n. rnocrina, or mew-omen, nzw men, A'ssIeNoa 'ro'wmnn mic, Inc. or NEW YORK, 1w. '1; a CORPORATION or nmwana swn'cmo man my mum 'A'ppllcation filed December iama. smr... sumo. r I

My invention relates to switching systems in general and more specifically to combinations of switching and relay systems.

An object of my invention is to provide certain improvements inswitching and relay systems whereby the apparatus and arrangement thereofprovides certain circuit connections and the proper timing for the establishment of such circuits.

A further object of my invention is to by any number of'circuits may be established in a predetermined order in a manner s11 b' stantially as described in the specification following.

Other and further .objects of my invention. are to provide certain structural features and arrangements of apparatus for controlling. the operation of communicating stems.

. A better understanding can be ad of the switching and relay system of my invention by referring to the specification following and to the accompanylng drawing which ilpower amplifier is associated with the mas- Y lusti ates the switching and relay system of 25- my invention. I

The particular arrangement shown in the accompanying drawing is especially adaptable for use in radio transmitting systems.

The switchin and relay system of m mvention may e employed. in many di erent circuit arrangements and in combination with electrical ap aratus other than radio transmitters. Reference ismade to the following specification and to the accompanying draw; ing for the purpose of illustrating the principles of my invention, as applied to a switching and relay system for radiotransmitters.

In radio transmitting systems it is a common practice to employ a master oscillator circuit arrangement. It is the general practict to interrupt the operation of the power amplifier in such. systems, thereby control- ;ling the radiation of energy from the trans:

mitter. The master oscillator is allowed to remain in an oscillating condition thereby increasing the stability of operation. The.

ter oscillator and is caused'to amplify the energy from the master oscillator. The control is usuall'y'in the grid or control electrode circuit of the amplifier and controlled by making and .breakmg the circuit or otherwise controlling the operation fier tube by means of a relay 0 key circuit.

Due-to the inherent capacity ofthe tube electrodes the energy from the master oscilif the amplilator is admitted to thehighfrequency load controlling the association of a high frequency oscillator and amplifier system with; the load circuit only when the key is depressed, introduces-many problems such as the proper timing of the relays and the probabihty that the relays will not operate in unison. "Other problems arise which offer considerable difiiculty of solution and which are avoided with the switching and relay system of my invention. I

The switching and rela system of my invention is illustrated in t e accompanying drawing as adapted to the control of'radio transmltting systems and for the purpose aforementioned. The key or relay circuit for controlling theoperation of'the amplifier is connected in series with the contact members associated with electromagnet armature -1. Electromagnet armature 1 is actuated by electromagnet 2 thereby completin the circuit to the key or relay controlo the amplifier. In order that electromagnet 2 be energized and the circuit. associated with armature 1 be completed, it is necessary that an electrical connection be established between contact members 3 and that key circuit 4 be closed. Source, of control energy 5 is associated with key circuit 4 and electromagnet 6.. The closing of key circuit 4 causes the energy from source 5 to energize'electromagnet 6. .Elect-romagnet 6 controls the movement of armature 7. Armature 7 is provided with suitable contact members whereby 1 the energization of electromagnet 6 estabv 'lishes a circuit and the deenergization of elecwith armature and contact members 7, is connected'in serieswith electromagnet 8 and source of potential 5. Upon the energization of electromagnet 6 by means of key circuit 1, electromagnet 8 is energized. Electromagnet 8 actuates an armature member 9 which is attracted in the direction of the dotted lines immediately above the-position shown. This attraction is prevented, however, at this instant by locking member 10 which is in the position shown by dotted lines Since the closing of key circuit 4 is necessary to energize electromagnets 6 and 8, no attraction of armature 9 would occur when key 4- is in the open position. The closing of key circuit4,,in* addition to completing the circuits for the energization of electromagnets 6 and 8, completes the circuit from source 5' to electromagnet 13. The energization of electromagnet 13 actuates locking member jand armature 10 which engages with member 11' of armature 9, thereby preventing the movement of armature 9 and the establishment of the circuit by means of contact members 3. The opening of key circuit 4 deenergizes electromagnet 13 and locking member 10 is disengaged with member 11 *due to spring 12. Although key circuit 4 is opened,

armature 7 associatedwith electromagnet 6 is in the closed position, thereby maintaining connection between electromagnet 8 and source of energy 5 by virtue of the retarding action of a suitable dash pot 20 associated therewith. The closed position of armature 9 and member 11 causes the completion of the circuit including contact members 3, electromagnet 2 and source of potential 5. The circuit associated with armature 1 is thereby completed. Continued interrupting of key circuit 4 causes continued interrupting of the energization of electromagnet 2 and hence interruption of the transmitter key circuit or circuit associated with the operation of the amplifier tubes. A suflicient lapse in transmission or an interruption of the key circuit 4 overa considerable length of time results in the opening of armature 7, the deenerglzation of electromagnet 8 and interruption of the circuit including contacts 3, elecspring metal supported on armature 9 by means of insulator 17. Contact member 16 completes the electrical circuit between contacts Hand 15 which latter may be associated with the transmitter and load circuit res ectively. As heretofore mentioned the oad circuit may comprise a space radiating system. The load circuit ma be the input circuit or the output circuit 0- a thermionic tube employed in any suitable arran ment. Contact members 18 may be provi ed whereby a circuit including pilot lamp 19 and source of potential 5-ind1cates the opened position of armature 9. The pilot lamp may be positioned adjacent to the compass-bearing equi nient serving to warn the operator to app y a correction factorin the determination of the bearing. The bearin as indicated by most systems is influence by the presence of complete circuits such as would be the case "with the closed antenna circuit.

I realize that many modifications of the switching and relay system of my invention are possible without departin from the spirit of my invention. Any numTer of movable armatures may be employed in combination with electromagnets and the same provided with suitable contact members, depending upon the particular application of the system. It is to be understood that the embodiments of my invention are not to be restricted to the accompanying drawing or the foregoing specification but onl as defined in the scope of the appended c aims.

What I claim as new and desire to secure by Letters Patent of the United States is:

1. A switching and relay system comprising in combination a source of electrical energy, a plurality of electromagnetic relays each having a winding and an armature member provided with contact members, a com mon control circuit associated with said source of energy and the windin of said electromagnetic relays for energizing said windings, a movable armature associated with an elec'tromagnet energized in common with the energization of said relays, said movable armature being disposed in looking relation to the armature of one of said relays for preventing the actuation of said last mentioned relay for a given time interval after said control circuit is closed, and means for releasing said interlock and prolonging the'energization of said last mentioned relay forgiven time intervals irrespective of the subsequent opening of said control circuit. 2. A switching and relay system com rising in combination a source of electrica energy, a plurality of electromagnetic relays each including an armature and an operating solenoid and having the solenoids thereof energized by said source of energy, a control circuit in common with said relays, an electromagnet control device associated with a movable armature and energized in common with said solenoids, the movable armature of said electromagnet control device being disposed in interlocking relation to the armature of one of said relays adapted to mechanically prevent the mechanical operation of the armature of the last mentioned one of said relays, and means for prolonging the energization of said last mentioned relay after said control circuit is opened.

3. A switching and relay system comprising in combination a main electromagnetic relay, a plurality of electromagnetic relays associated with a source of electrical energy, an armature and contact system controlled by each of said relays, a common control circuit for connectin certain of said relays with said source, an e ectromagnetic locking device for preventing the mechanical movement of the armature amociated with one of'said I -'relays, said electromagnetic locking device being controlled by the closing of said common control circuit, and a slow motion mechanism connected to one of said relays for prolonging the energization of the relay which has its armature controlled by said electromagnetic locking device for a predetermined time after the opening of said control circuit.

4. A switching and relay system comprising in combination a main electromagnetic relay, a plurality of auxiliary electromagnetic relays, associated with a source of electrical energy, a common control circuit, said electromagnetic relays each comprisin an electromagnet and a movable armature adapted to control a plurality of circuits, an electromagnetic'locking device disposed adjacent the armature of said main relay for preventing the mechanical movement of the armature associated therewith when the electromagnet thereof is energized by closing said control circuit, said electroma etio locking device being controlled by sai dommon control circuit, and one of said auxiliary relays bein adapted to'prolong the energization of sai main relay for'a given time interval after the I opening of said control circuit.

ARTHUR M. TROGNER. 

